Signaling apparatus.



110.831,526. PATBNTED SEPT.18, 1906. H. 0.11UGH. SIGNALING APPARATUS.

APPLICATION FILED JAILB, 1904.

A A Afa/Z1.

which the followingis a ful, c

' UNITED STATES PATENT OFFICE.

HARRY O. RUGH, OF CHICAGO, ILLINO] H, ASSIGNOR TO WESTERN TELEGRAPHONECOMPANY, OF MINNEAPOLlS,.MINNESOTA, A CORPORATION OF SOUTH DAKOTA.

SIGNALING APPARATUS.

Specification of Letters PatentY Patented Sept. 18. 1906.

Application led January 8, 1904.. Serial No. 188.210.

To au whom it may concern.-

Be it known that I, HARRY O. RUGH, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Si alin Apparatush ofear, concise, and exact description, reference being had to theaccompanying drawing, forming a part vof this specification.

a 'My invention relates tovsignaling apparatus and systems.

In accordance with one feature of my in- .vention I employ a relayhaving a polarized armature in combination with a suitable source ofsignaling-current for polarizing the relay alternately, thereby effectinthe operation of the -armatureandf a signa -producing device governed bythe armature. The re ay preferably presents two poles to the armature,the winding of the relay being such that thesepoles are of unlike sign,so that when alternating current is impressed upon the relay each polealternates in sign, the armature being at such times continuouslyvibrating out -of operative contact with the unlike oles or contactsdesirably associated therewith when a source of high-frequencycalling-current isl employed. I preferably so arrange the apparatus thatwhen such calling-current is not impressed upon the relay a signalcontrolled b f the armature will remain quiet, while when suchcalling-current is impressed u on the relay the armature will effect thepro uction of signals owing to its ra id vibration.

n the preferred embodiment of my invention I employ a subsidiary orsecondary signaling-circuit desirably having one terminal in theaforesaid armature and the other terminal in the frame of the saidrelay, the armature being adap'ted for electrical connection with one orthe other of the said poles that desirably serves to normally completethe said subsidiary circuit. There is desirably included in the saidsubsidiary circuit a signal-producing electromagnet, such as the magnetof an ordinary make-and-break direct-[current vibrating bell. Thissubsidiary circuit desirably includes a closed-circuit battery, thesignalproducing'magnct being thus normall. energized when the apparatusis idle. hen the apparatus is started in operation during the presencevof high-frequency calling-current upon the main signaling-circuit, thesubsidiary circuit is broken at the armature of the relay, they armaturethen being out of operative electrical contact with both of the poles,an ormake-and-break circuit being then estab ished about thesignal-producing electromagnet which istcaused to effect a signal,

f such as the sound of the bell.

In the preferred embodiment of my invention the relay-armature is`desirably of soft iron and is itself not materially magnetizedpermanently. The permanent magnet is,

or otherwise movably mounted for t e pul-,

pose of this adjustment. By this means all mechanical adjustment of therela Y-arIna ture may be avoided. vThis form ofs relayI believe to benovel with ine, and in it I prefer to employ two poles between which thearmature is dis osed; but I do not Wish to be limited in all)embodiments of the invention to a relay wherein this disposition of thearmature is effected.

The device of my invention is adapted for a wi'de variety of uses and isparticularly serviceable in connection with com osito telephony-and teleraphy, though it 1s not to be restricted to tIii's use. A

I will explain my invention more fully by reference to the accompanyingdrawing, which illustrates one type of apparatus designed in accordancewith the invention.

I have indicated a main signaling-conductor a, that may have includedtherewith a suitable source of calling-current b, located at th' stationfrom which signals are being sent, which signaling-current is desirablya high-frequency alternating current, particularly where the inventionis adapted for use 'in systems of composite telephony and telegra hy,there being indicated a circuit-closer c 'or the purpose of associatingthe source of calling-current with the said circuit.- The said circuitincludes the winding of a relay d, located at the signal-receivingstation, this winding being desirably divided into two IOS - 3o cuit lisopened., This secondalf'y t? l 5o connection wit coils e and f, that areplaced about the cores g \and h, which are desirably of soft iron and A'/preferablyunited at their heel portions by a soft-iron yoke i, themagnetic circuit being 5 complete save fora slight space between theinner ends of the cores g and h, which 'cores4 iare preferably placedvin axial ahnement.

L'lhe coils are so vrelatively disposed or Wound that when current 'ispassed through the same o''in a given direction the adjacent poles ofthecores g and h are of unlike' sign. The swlngingI/armature 7c, anchoredat 'one end and su stantiallyiree at the other, is polarized and'isvnormally desirably electrically coni v15 nected with one or the otherofthe poles' of -the cores g and' h,f the poles being desirably vprovided with platinum contacts, as is the v"armature, it being assumedthat? the armature is interposed between 'the zo The armature is thusdesirab x normally maintain the ysubsidiary or secondarysignaling-circuiti closedn The terminals of this secondary circuitreside. in the armature and desirably in a contact carried 2 5 by the'core or cores of the relay. When signailing-current is-passed over themain. signaling-zcircuit, the armature is moved out of operative contactywith the frame of the re- `lay., whereupon the secondasignaling-cireircuit inf cludes av signal `presenting ore tromagnet sm,which this instance controls a signalhih the forni of a. gong n, the arlmatureI ofthe magnet carrying a clapper o 315 for-striking the gong."The same armature -also carries a contact-spring p, that has a backcontact g, the contacts and g, with their connections rand s,-estalishing a tertiary signaling-circuit that is brought into ac- 4o tionwhen the secondary circuit is open at the armature 7c, the battery tbeing desirably common to both the secondary and tertiary circuits. 'Aslong as the armature 7c is in open circuit; which is during the resenceof suitable signaling-current upon t e line, the si aling-magne'tm willremain in operation ter the manner of an ordinary vibrating v e When theap aratus is to be employed in composite telephone and telegraph lines,the signaling-current that is most desirably employed is' one of highfrequency. I have indicateda line t-, that may serve to carry bothtelephonie and telegraphic currents; but I have not deemed anillustration of the apparatus to be used upon such a line for thesepurposes to be essential to an understanding of my present invention.

The permanent magnet v serves to polar- 6o ize the armature ci therelay. 'lhismagnet permanently polarizes the armature and is made.-vadjusta le, S0 that the strength of the coaction between the relay-polesand armature may be regulated.

' 655s. It will be seen thatllihave provided a relay pair oi poles. v

y caused to v cting elecwhereinA the 'armature is subject to theadjustin of the relay-poles'and the armature.

It is obvious .that changes may be made in the a paratus I havehereindisclosed without e arting from the spirit of my invention. II do not,therefore, wish to be limited to the precise meehanism'and circuitsillustrated; but, y u

vHaving 'thus described my invention, 'I

influence of fa magnet Without thel necessity of modifyingthe physicalrelations claim as new and desire to secureby Letters Patent- 1. Thecombination with a relay havln two op osed polar portions and provideWith-co1 s wound to secure'in said polar pory. tions polarities-ofunlike sign and having a vermanently-polarized armature inter7 osedbetween the same, of a source of hig -freuency current in circuit withsaid coils to simultaneously cause in said polar portions polarities ofunlike sign, signal-producing means controlled by the armature and asubsidiary signaling-circuit placed in one operative condition by thearmature when it is idle and attracted toward one or the other of thesaid poles and placed in an alternativelyoperative conditionl When thearmature is alternately attracted by said poles, substantially asdescribed.

2. The combination with a relay having two opposed soft-iron olarportions and provided With coils Woun to secure in said polar portionspolarities oi unlike sign and having 'a permanently-polarized armatureinterposed between the same, of a source of highfrequency current incircuit with said coils to simultaneously cause in said polar portionspolarities of unlike sign, signal -producing means controlled by thearmature and a subsidiary signaling-circuit placed in one operativecondition by the armature when 1t is IOO idle and attracted toward oneor the other of j thesaid poles and placed in an alternativelyoperativecondition when the armature is alternately attracted bythe poles,substantially as described.

3. The combination With a relay-having two opposed polar portions andprovided With coils Wound to secure in said polar portions polarities ofunlike sign and having a permanently-polarized armature interposedbetween the same, of a source of highre' uency ,eurrent'in circuit withsaid coils to simultaneously cause in said polar portions polarities ofunlike sign, vsignal-producing means controlled by the armature, asubsidiary signaling-circuit placed in one operative condition by thearmature when it is idle and attracted toward one or the other of thesaid polesv and placed in an alternatively- ,f

operative condition when the armature is alternately attracted bythepoles, and an adjusting-magnet for polarizing the armature,substantially as described.

- justing-mavnet for I the said poles and .4. The combination with arelayhaving two opposedsoft-ironiolar portions and provided with coilswoun to secure in said polar portions polarities of unlike sig'nrandhaving a permanently-polarized amature interposed between the same, of asource of highequency current in circuit with said coils tosimultaneously cause in said polar portions polarities of unlike sign,signal-producing means controlled by the amature, a subsidiarysignaling-circuit placed in one operative condition by the armature whenit is idle and attracted toward one orthe other of placed in analternativelyoperative condition when the armature is alternatelyattracted by the poles, and an adpolarizing the armature, substantiallyas described.

5. The combination with a relay havin two opposed polar portions andprovide with coils wound to secure in said polar portions polarities ofunlike sign and having a permanently-polarized armature inte osed etweenthe same, of a source ofghig -frcquency current in circuit with saidcoils to simultaneously cause in said polar portions polarities ofunlike sign, signal-producing means controlled by the armature, asubsidiary signaling-circuit placed in one operative condition by thearmature when it i's idle and attracted toward one or the other of thesaid polos and placed in an alternativelyoperative condition when thearmature is alternately attracted by the poles, and a permanentadjusting-magnet for polarizing the armature, substantially asdescribed.

6. The combination with a relay having two opposed soft-iron olar portions and provided with coils wound) to secure in said polar portionspolarities of unlike sign and having a permanently-polarized armatureinterposed between the same, of a source of highfrequency current incircuit'with said coils to simultaneously 'cause in said polar portionspolarities of unlike sign, signal-producing means controlled by thearmature, a subsidiary signaling-circuit placed in one operativecondition by the armature when it is idle and attracted toward one orthe other of the said poles and placed in an alternativelyoperativecondition when the armature is alternatelv attracted by thevpoles, and-apermanent adjusting-magnet for polarizing thc cause in said polarportions polarities of;un-'

like sign, signal-producing means controlled by the armature and anormally closed slubsidiary signaling-circuit placed in one o erativecondition by'the armature when it is idle and attracted toward one orthe other of the said poles and placed in an 4alternativelyoperativecondition when .the armatureiis alternately attracted by the poles, saidarmature controlling one termina of the signalingcircuit, the otherterminal of the circuit being duplicated, one or the other of theduplicated terminals being normally connected with the terminalcontrolled by the armature.

8. The combination with a relay having two opposed soft-iron olarportions and provided with coils wound) portions polaritics'of unlikesign and having a polarized armature interposed between the same, of asource of high-frequency current adapted for inclusion in licircuit withsaid coils to simultaneously causein said polar portions polarities ofunlike sign, signal-producing meansv controlled bv and a normallylclosed subsidiary si nalingcircuit placed in one operative condition bythe armature when it is idle and attracted toward one or the other ofthe said poles and placed in an alternatively-operative condition whenthe armature is alternately Aattracted by the poles, said armaturecontrolling one terminal ofthe signaling-circuit, the other terminal ofthe circuit beingduplicated, one or the other being normally connectedwith the terminal controlledby the armature.

' In wit-ness whereof I hereunto subscribe my name this 14th da ofMarch, A. D. 1903.

' ARRY O. RUGH.

Witnesses GEORGE L.CRAGG, JEssIE L. Davis.

to secure in said polar the armature.

rob

